clench (noun) /klɛnt͡ʃ/
1
A tight grip.
2
(engineering) A seal that is applied to formed thin-wall bushings.
3
A local chapter of the Church of the SubGenius parody religion.
4
(archaic) A pun
clench (verb) /klɛnt͡ʃ/
1
To grip or hold fast.
2
To close tightly.